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rough country speedometer calibrator reviews
Vehicle test is the most important method to verify vehicle performance and plays an important role in the development and verification of vehicles. The accuracy of speedometer and odometer display is an important factor to measure vehicle safety performance. If the displayed value of the speedometer is smaller than the actual speed, overspeed may occur; If the mileage displayed on the odometer is less than the actual mileage, the vehicle will reach the maintenance mileage without maintenance. In short, if the speedometer and odometer can not display accurately, there will be serious safety hazards, which will seriously threaten the safety of people or vehicles. The existing speedometer and odometer inspection and calibration tests are based on the actual road, which are greatly affected by external factors such as weather and environment, and the test data collection is not convenient, and the test repeatability is poor.
Rough country speedometer calibrator reviews:
1. The tire pressure of the tested vehicle shall be adjusted to the specified pressure, the axle load shall not exceed the allowable load of the test bench, and the tire shall be dry. It is dry, free of oil stains and foreign matters such as small stones.
2. Drive the vehicle straight onto the inspection platform and park the driving wheel in the middle of the speed measuring roller; The front and drive of the vehicle during speed measurement. No standing personnel are allowed on both sides of the moving wheel.
3. Lower the lifter or loosen the cylinder locking mechanism. If necessary, add a stop at the front of the non-drive wheel (front wheel drive vehicle apply the parking brake);
4.The vehicle should accelerate as smoothly as possible. When the speedometer indicates 40km/h, the driver should press the remote control for 3s~5s declare, the computer automatically takes the value and judges the result;
5. At the end of the test, the pilot raises the accelerator, and cannot step on the brake. Wait for the vehicle speed to drop naturally and stop, and then the lifting plate will rise, Drive away from the detection station.
6. According to Technical Conditions for Motor Vehicle Operation Safety (GB7258-2012) or when the speedometer is 40km/h. The inter-city speed shall be 32.8~40 km/h. The speedometer of the vehicle is qualified.
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